ACOUSTICAL EVALUATION OF TYPE II AIRCRAFT GROUND RUNUP NOISE SUPPRESSOR AT TRUAX AIR FORCE BASE, WISCONSIN

Abstract

Acoustical evaluations were made of the Type II aircraft ground runup noise suppressors. The evaluations provide comparison of performance with and without installation of a diffusion screen in the exhaust stream. A description is presented of the suppressor's reduction of the noise radiated by the aircraft to the far field, and the change in the noise environment for maintenance personnel resulting from enclosing the aircraft. The noise environment in the suppressor's control and utility rooms during aircraft runup is described. The computed transmission loss is reported for the walls and doors and an estimate of the relative contributions of each noise transmission path to the suppressor's far field noise is included. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1962
Accession Number
AD0294189

Entities

People

  • Kenneth M. Eldred

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Aircrafts
  • Diffusion
  • Environment
  • Far Field
  • Losses
  • Maintenance
  • Maintenance Personnel
  • Military Personnel
  • Suppressors
  • Test And Evaluation
  • Transmission Loss

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Software Engineering